Gauge wiring. Idiot lights vs. gauges - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BurnoutNova · 06-17-2013, 11:40 AM

I tried searching for some info about this, but cam up with nothing.

I was wondering if the wiring harness is different for the instrument clusters that have lights vs. the instrument clusters that have gauges. My only experience is with the 67-72s and I know they are wired different. It's a long story, but I replaced an interior harness that was all hacked up with a used one, and the original truck had gauges, and the new harness came from a truck that did not.

I plugged everything in, and sort of ran out of time to keep checking things but the fuel gauge is going crazy and the blinkers are blinking opposite (the right indicator light blinks for left turn signal, etc).

Any ideas?

**hatzie** · 06-17-2013, 02:27 PM

This should help.
http://67-72chevytrucks.com/vboard/s...d.php?t=456877

I really wish the 73-87 FAQ was in the sub-forum list. It's not easy to find.

Jonboy · 06-18-2013, 09:32 AM

You may have to repin the connector. As long as your senders are correct for the gauges/lights that are in the truck, the wire connecting the two doesn't really make a difference. They should even be the same color.

06-17-2013, 11:40 AM	#1
BurnoutNova Registered User Join Date: Mar 2004 Location: CA Posts: 2,057	Gauge wiring. Idiot lights vs. gauges I tried searching for some info about this, but cam up with nothing. I was wondering if the wiring harness is different for the instrument clusters that have lights vs. the instrument clusters that have gauges. My only experience is with the 67-72s and I know they are wired different. It's a long story, but I replaced an interior harness that was all hacked up with a used one, and the original truck had gauges, and the new harness came from a truck that did not. I plugged everything in, and sort of ran out of time to keep checking things but the fuel gauge is going crazy and the blinkers are blinking opposite (the right indicator light blinks for left turn signal, etc). Any ideas?

06-17-2013, 02:27 PM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Gauge wiring. Idiot lights vs. gauges This should help. http://67-72chevytrucks.com/vboard/s...d.php?t=456877 I really wish the 73-87 FAQ was in the sub-forum list. It's not easy to find. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

06-18-2013, 09:32 AM	#3
Jonboy Slots go on anything! Join Date: May 2003 Location: Richardson, TX Posts: 5,957	Re: Gauge wiring. Idiot lights vs. gauges You may have to repin the connector. As long as your senders are correct for the gauges/lights that are in the truck, the wire connecting the two doesn't really make a difference. They should even be the same color.



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